Square pier column formwork construction device

Abstract

The invention discloses a square pier column formwork construction device which comprises a formwork assembly. The hoop assemblies are arranged on the periphery of the formwork assembly at intervals in the height direction of the formwork assembly, and every two adjacent hoop assemblies are fixedly connected through a plurality of inter-hoop stand columns; the two hoop longitudinal beams and the two hoop cross beams are detachably connected to the periphery of the formwork assembly to form a square frame structure, the hoop longitudinal beams are detachably connected with the longitudinal formworks, and the hoop cross beams are detachably connected with the transverse formworks; the hydraulic jacks are connected between the hoop cross beams and the hoop longitudinal beams in a driving mode, the two hoop longitudinal beams and the two hoop cross beams are connected through opposite-pull screws, and an opposite-pull locking device is arranged at one end of each opposite-pull screw. Dependence on arrangement of opposite-pull screws in concrete can be eliminated, the appearance and durability of a concrete pouring structure are guaranteed, the assembling and disassembling difficulty of the formwork assembly is effectively reduced, and the assembling and disassembling efficiency of the formwork assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge engineering construction, and particularly relates to a square pier column formwork construction device. BACKGROUND

[0002] In bridge engineering construction, the square pier column is a key load-bearing structure of the upper structure of the bridge, and the construction quality and construction efficiency of the formwork for pouring and forming the square pier column directly affect the overall engineering progress and the safety of the structure. At present, in the assembly and disassembly operation of the square pier column formwork, it is generally relied on to set a tensioning screw in the concrete to realize the fixation of the formwork, that is, after the formwork is assembled, a tensioning pre-tightening force is applied to the tensioning screw penetrating the formwork and the area to be poured with concrete to ensure that the formwork remains stable during the concrete pouring process.

[0003] However, this construction method of setting a tensioning screw in the concrete has many shortcomings. For example, in the formwork installation link, a single formwork needs to be manually carried to the operation position first, and then hoisted into place with the aid of lifting equipment, and multiple workers need to repeatedly adjust the position of the formwork during the installation process. This not only consumes time and effort, but also is difficult to control the installation precision, often causing problems such as too large formwork joint gaps or position deviation, and is prone to safety accidents. After the formwork is preliminarily positioned, the tensioning screw needs to be manually locked. Since the length of the screw needs to be adapted to the cross-sectional size of the pier column, different specifications of the pier column need to be equipped with different lengths of the screw. The construction site is prone to misuse or mixed use of the screw, and the installation of the screw needs multiple people to tighten the nut. If the force is uneven, it is easy to cause the formwork to deform, increasing the risk of formwork rising during concrete pouring.

[0004] For another example, in the disassembly link of the formwork, the existing construction method also relies on manual operation. When the concrete reaches the demolding strength, the worker needs to loosen the nut of the tensioning screw one by one, and then pull out the screw from the concrete. During this process, the screw is often difficult to remove due to adhesion or corrosion of the concrete, and needs to be forcibly stripped with the aid of a crowbar or other tools. Not only is the screw and the formwork easily damaged, but also the formwork may suddenly fall off due to excessive force, causing safety accidents. After the screw is removed, the worker needs to clean the concrete residues and oil stains on the surface of the formwork, and then carry the formwork to the stacking area. The whole disassembly process of the formwork is relatively cumbersome, and the formwork is prone to deformation during the transportation process due to collision, affecting the subsequent reuse of the formwork.

[0005] In addition, the use of the tensioning screw forms a through hole in the concrete structure, which needs to be plugged later. This not only increases the construction process and construction cost, but also may cause rainwater to seep into the hole due to incomplete plugging, affecting the durability of the concrete structure, and the remaining hole also damages the integrity of the appearance of the pier column. SUMMARY

[0006] The technical problem solved by the present application is to provide a square pier formwork construction device, which does not need to set a tensioning screw rod penetrating through the formwork assembly and inserted into the concrete, and can effectively reduce the difficulty of formwork assembly and disassembly and improve the disassembly efficiency of the formwork.

[0007] To solve the above technical problem, the technical scheme adopted by the present application is: a square pier formwork construction device, comprising a formwork assembly adapted to the square pier, which is composed of a longitudinal formwork and a transverse formwork in detachable connection; further comprising at least two groups of hoop assemblies arranged at the periphery of the formwork assembly in the height direction of the formwork assembly, the hoop assembly comprising a hoop longitudinal beam, a hoop transverse beam, a hydraulic jack and a tensioning screw rod, the adjacent two groups of hoop assemblies being fixedly connected through a plurality of inter-hoop vertical columns; the two hoop longitudinal beams and the two hoop transverse beams are detachably connected at the periphery of the formwork assembly to form a square frame structure, the hoop longitudinal beam is detachably connected with the longitudinal formwork, and the hoop transverse beam is detachably connected with the transverse formwork; the hydraulic jack is drivingly connected between the hoop transverse beam and the hoop longitudinal beam, and the two hoop longitudinal beams and the two hoop transverse beams are connected through the tensioning screw rod, one end of the tensioning screw rod being provided with a tensioning locking device.

[0008] As an improvement of the above scheme, a plurality of buckles are fixedly arranged on the outer side surfaces of the longitudinal formwork and the transverse formwork, and the hoop longitudinal beam and the hoop transverse beam are connected with the formwork assembly through the corresponding buckles to form buckle connection.

[0009] As an improvement of the above scheme, the transverse formwork is an integrated formwork structure, and the longitudinal formwork is a split formwork structure composed of a plurality of formwork units in detachable connection; the plurality of formwork units constituting the longitudinal formwork and the formwork unit and the transverse formwork are detachably connected through the cooperation of bolt holes and bolts.

[0010] As an improvement of the above scheme, the output end of the hydraulic jack is fixedly connected with a limiting block, and the back surfaces of the hoop longitudinal beam and the hoop transverse beam are provided with limiting grooves extending along the length direction thereof; the limiting block connected with the output end of the hydraulic jack is embedded in the corresponding limiting groove to form sliding fit.

[0011] As an improvement of the above scheme, two hydraulic jacks are arranged on each of the hoop longitudinal beam and the hoop transverse beam, the two hydraulic jacks being fixed at the two ends of the corresponding hoop longitudinal beam or hoop transverse beam, and the output end of the hydraulic jack and the two ends of the adjacent hoop transverse beam or hoop longitudinal beam form sliding fit.

[0012] As the improvement of the above scheme: still include the operation platform arranged at the top of the template assembly and the template dismounting platform arranged at the bottom of the template assembly, the operation platform and the template dismounting platform are fixedly connected through the plurality of support truss columns; the operation platform is provided with the pouring opening communicated with the inside of the template assembly; the template dismounting platform is provided with the square hole matched with the square pier column, and the template dismounting platform is fixed at the periphery of the square pier column.

[0013] As the improvement of the above scheme: the bottom surface of the operation platform and the top surface of the template dismounting platform are fixedly provided with a plurality of sliding grooves, the sliding grooves extend outward along the radial direction of the template assembly; the longitudinal template and the transverse template are slidably connected with the sliding grooves through the plurality of sliding blocks fixed at the top and the bottom.

[0014] As the improvement of the above scheme: still include the stress sensor installed on the template assembly, the hoop longitudinal beam, the hoop transverse beam and the tension screw; the stress sensor, the tension locking device and the hydraulic jack are electrically connected with the integrated control center arranged on the ground.

[0015] The beneficial effects of the present application are: the present application sets the hoop assembly on the template assembly for pouring and forming the square pier column, the hoop longitudinal beam and the hoop transverse beam in the hoop assembly are locked and fixed by the tension screw, so that the hoop assembly forms the stable reinforcing effect on the template assembly at the periphery of the template assembly, and the stability of the template assembly is ensured during the concrete pouring process; and the demolding work of the template assembly is carried out by setting the hydraulic jack, after the pouring construction is completed, the hoop longitudinal beam and the hoop transverse beam can be pushed outward by the hydraulic jack, so as to drive the transverse template and the longitudinal template of the template assembly to synchronously translate outward, and the rapid demolding of the template assembly is realized; the present application can get rid of the dependence on the tension screw arranged in the concrete, so as to avoid leaving the hole in the concrete after pouring, ensure the appearance and durability of the concrete pouring structure, and effectively reduce the difficulty of assembling and disassembling the template assembly and improve the assembling and disassembling efficiency of the template assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the square pier column template construction device; Figure 2 It is a cooperation structural schematic view of the template assembly and the hoop assembly; Figure 3 It is a structural schematic view of the hoop assembly; Figure 4 It is a structural schematic view of the template assembly.

[0017] The figure is marked as: 100-square pier column, 200-formwork assembly, 210-longitudinal formwork, 220-lateral formwork, 230-buckle, 240-bolt hole, 300-hoop assembly, 310-hoop longitudinal beam, 320-hoop lateral beam, 330-hydraulic jack, 340-pull screw, 350-inter-hoop vertical column, 360-pull locking device, 371-limiting block, 372-limiting groove, 410-operation platform, 420-formwork assembly and disassembly platform, 430-supporting truss column, 440-sliding groove, 500-stress sensor. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present application, the present application will be further described below in conjunction with the accompanying drawings.

[0019] In the description of the present application, it should be noted that the terms "front", "back", "left", "right", "up", "down", "inner", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0020] As shown in Figure 1 and Figure 2 The square pier formwork construction device disclosed by the present application comprises a formwork assembly 200 and a hoop assembly 300; the formwork assembly 200 serves as a formwork for pouring and forming a square pier 100, and the hoop assembly 300 is used for reinforcing the formwork assembly 200 and for demolding the formwork assembly 200 after the pouring construction of the square pier 100 is completed.

[0021] Specifically, as shown in Figure 2 and Figure 4 The formwork assembly 200 used in the present application is composed of longitudinal formworks 210 and lateral formworks 220. Two longitudinal formworks 210 and two lateral formworks 220 are connected and enclosed to form a formwork assembly 200 that is adapted to the square pier 100, and the formwork assembly 200 is enclosed outside the square pier 100 to form a complete wrapping structure for the square pier 100 from four directions, which can preliminarily determine the overall position of the formwork and ensure that the coverage range matches the size of the square pier 100. In order to realize the rapid assembly of the formwork assembly 200, the present application is provided with a buckle 230, which is used for connecting the longitudinal formworks 210 and the lateral formworks 220. Figure 4As shown, the transverse formwork 220 adopts an integrated formwork structure, the longitudinal formwork 210 adopts a split formwork structure, and the longitudinal formwork 210 is composed of multiple formwork units; the side edge portions of the formwork units and the side edge portions of the transverse formwork 220 are fixedly provided with reserved bolt hole positions 240, and these bolt hole positions 240 form a universal connecting interface; multiple formwork units can be connected and assembled into the longitudinal formwork 210 through cooperation of bolts and the bolt hole positions 240, so that the longitudinal formwork 210 and the transverse formwork 220 can be quickly connected and assembled into the formwork assembly 200. The longitudinal formwork 210 is set as a split combined formwork structure, which lays a foundation for flexible combination and splitting of the formwork assembly 200 in different construction stages; in the construction stage of the square pier column 100, the construction personnel only need to butt joint and fasten the formwork units through bolts, so as to quickly combine into the complete longitudinal formwork 210, and meet the requirements of the size and sealing performance of the formwork for pouring construction of the square pier column 100. After the overall construction of the square pier column 100 is completed, in the construction stage of the bent cap, without replacing new formworks, the longitudinal formwork 210 can be split into independent formwork units only by removing the connecting bolts; then the split formwork units are butt jointed and fastened with the transverse formwork 220 according to a new arrangement mode, so as to quickly form a bent cap side formwork system. Through the modular design of the formwork assembly 200, the formwork transfer and replacement process in the construction process can be effectively reduced, time waste and labor input caused by formwork replacement can be avoided, and the construction efficiency can be significantly improved; and the formwork units of the longitudinal formwork 210 can realize "one formwork for two uses", form two formwork structures through different arrangement modes, reduce the construction investment cost, do not need to separately purchase formworks for different construction stages, and can bring good economic benefits to the bridge construction project. In addition, the formwork assembly 200 is convenient to assemble and connect firmly, can effectively ensure that the concrete does not appear the problem of slurry leakage in the pouring process, and ensure the forming quality of the square pier column 100.

[0022] Specifically, as Figure 2 and Figure 3As shown, the hoop assembly 300 used in the present application comprises a hoop longitudinal beam 310, a hoop transverse beam 320, a hydraulic jack 330 and a tensioning screw 340, at least two groups of hoop assemblies 300 are arranged at intervals along the height direction of the formwork assembly, a frame structure is formed on the periphery of the formwork assembly 200 by the hoop assembly 300, the formwork assembly 200 can be reinforced by the hoop assembly 300 during the construction process of the square pier 100, and the formwork assembly 200 can be quickly removed by the hoop assembly 300 after the pouring construction is completed. A hoop-to-hoop vertical column 350 is arranged between adjacent hoop assemblies 300, the hoop-to-hoop vertical column 350 is vertically arranged, the upper and lower ends of the hoop-to-hoop vertical column 350 are connected and fixed with the two groups of hoop assemblies 300 by bolts respectively, so that the whole formwork assembly 200 and the hoop assembly 300 are connected together, and the overall structural stiffness of the present application is effectively improved. The hoop longitudinal beam 310 and the hoop transverse beam 320 are sequentially connected to form a square frame structure surrounding the periphery of the formwork assembly, the hoop longitudinal beam 310 is connected to the longitudinal formwork 210, the hoop transverse beam 320 is connected to the transverse formwork 320, and the fixation of the hoop longitudinal beam 310 and the hoop transverse beam 320 is realized by the buckle 230 fixed on the formwork assembly; a plurality of buckles 230 are arranged at intervals along the circumference of the formwork assembly 200, the hoop longitudinal beam 310 and the hoop transverse beam 320 are connected with the formwork assembly 200 by corresponding buckles 230; the buckle 230 adopts two bending buckle structures distributed above and below and fixed on the formwork assembly 200, the hoop longitudinal beam 310 and the hoop transverse beam 320 adopt a transversely inserted manner to form a buckle connection with the buckle 230, and the buckle 230 engages and fixes the corresponding hoop longitudinal beam 310 or hoop transverse beam 320. The tensioning screw 340 used in the present application is used to tighten the hoop assembly 300, the tensioning screw 340 does not need to penetrate the formwork assembly 200 and be inserted into the concrete, that is, there is no connection relationship between the tensioning screw 340 and the formwork assembly 200. Through holes matched with the tensioning screw 340 are arranged at the two ends of the hoop longitudinal beam 310 and the hoop transverse beam 320, four tensioning screws 340 are arranged in each group of hoop assemblies 300, that is, two tensioning screws 340 are arranged between the two hoop longitudinal beams 310, and two tensioning screws 340 are arranged between the two hoop transverse beams 320. A tensioning locking device 360 is arranged at one end of the tensioning screw 340, the tensioning locking device 360 adopts a mechanical self-locking structure, a built-in hydraulic system provides power to drive the tensioning locking device 360 to rotate relative to the threadedly matched tensioning screw 340, the tensioning screw 340 is tensioned, so as to apply prestress to the hoop longitudinal beam 310 and the hoop transverse beam 320; the tensioning locking device 360 monitors the elongation of the tensioning screw 340 in real time through a built-in displacement sensor, and automatically stops rotating when the preset value is reached, so as to avoid deformation of the formwork assembly 200 and the hoop assembly 300 caused by excessive tensioning of the tensioning screw 340.

[0023] As shown in Figure 2 and Figure 3 , the present application adopts the clamp longitudinal beam 310 and the clamp cross beam 320 on the basis of the clamp assembly 300 described above, and sets the hydraulic jack 330 between the clamp longitudinal beam 310 and the clamp cross beam 320, which is used to provide the form removal power when the formwork assembly 200 is disassembled. One hydraulic jack 330 is installed at each end of each clamp longitudinal beam 310 and each clamp cross beam 320, that is, two hydraulic jacks 330 are installed on each clamp longitudinal beam 310 and each clamp cross beam 320. The cylinder body of the hydraulic jack 330 is fixed on the corresponding clamp longitudinal beam 310 or clamp cross beam 320, and the output end of the hydraulic jack 330, that is, the piston rod, abuts against the adjacent clamp cross beam 320 or clamp longitudinal beam 310, so that the power of the hydraulic jack 330 can be transmitted to the adjacent clamp cross beam 320 or clamp longitudinal beam 310, and the clamp cross beam 320 or clamp longitudinal beam 310 matched with the piston rod of the hydraulic jack 330 can be pushed outward. At the same time, in order to ensure that the movement of the clamp longitudinal beam 310 and the clamp cross beam 320 under the thrust of the hydraulic jack 330 remains stable, the present application also guides and limits the movement of the clamp cross beam 320 and the clamp longitudinal beam 310 under the drive of the hydraulic jack 330 by setting the limiting block 371 and the limiting groove 372. As shown in Figure 3 , the limiting block 371 is fixedly connected to the output end of the hydraulic jack 330, and the limiting groove 372 extending along the length direction is arranged on the back of the clamp longitudinal beam 310 and the clamp cross beam 320. The limiting block 371 connected with the piston rod of the hydraulic jack 330 is embedded in the corresponding limiting groove 372 to form a sliding fit, and the sliding of the limiting block 371 along the limiting groove 372 ensures that the movement path of the clamp cross beam 320 and the clamp longitudinal beam 310 remains horizontal. Through the limiting action of the limiting groove 372 on the limiting block 371, the present application can ensure that the piston rod of the hydraulic jack 330 extends and retracts along the fixed direction, avoid the offset affecting the transmission efficiency of the power, and at the same time, can constrain the stroke of the piston rod to prevent it from being damaged due to excessive extension and retraction. Through the jacking action of the hydraulic jack 330, it can ensure that the two clamp longitudinal beams 310 or the two clamp cross beams 320 move outward along the radial direction of the formwork assembly 200 synchronously when the formwork assembly 200 is disassembled, and avoid damaging the formwork assembly 200 or the poured and formed pier due to uneven stress.

[0024] Further, as shown in Figure 1 and Figure 2As shown, the present application is also provided with an operation platform 410 and a template assembly and disassembly platform 420, the operation platform 410 is fixed at the top of the template assembly 200, the template assembly and disassembly platform 420 is fixed at the bottom of the template assembly 200; at the same time, a plurality of support truss columns 430 are arranged between the operation platform 410 and the template assembly and disassembly platform 420, the operation platform 410 and the template assembly and disassembly platform 420 are connected and fixed through the support truss columns 430, and the operation platform 410 is supported. A pouring opening in communication with the inside of the template assembly 200 is arranged on the operation platform 410, through which concrete slurry can be poured into the inside space of the template assembly 200 to form the square pier column 100. A square hole matched with the square pier column 100 is arranged at the center of the template assembly and disassembly platform 420, the top of the square pier column 100 whose previous section has been constructed is inserted into the square hole of the template assembly and disassembly platform 420, so that the template assembly and disassembly platform 420 is fixed at the periphery of the square pier column 100. A plurality of sliding grooves 440 are fixedly arranged on the bottom surface of the operation platform 410 and the top surface of the template assembly and disassembly platform 420, the sliding grooves 440 extend outward along the radial direction of the template assembly 200; the longitudinal template 210 and the transverse template 220 are slidably connected with the sliding grooves 440 through the sliding blocks fixed at the top and the bottom. The sliding blocks and the sliding grooves 440 guide and limit the translation of the longitudinal template 210 and the transverse template 220 when the templates are disassembled, so as to further ensure the stability of the translation of the longitudinal template 210 and the transverse template 220 when the templates are disassembled.

[0025] As Figure 3As shown, the present application also installs a stress sensor 500 on the pull screw 340, which monitors the stress state of the pull screw 340 in real time through the stress sensor 500. Similarly, stress sensors 500 can also be installed on the formwork assembly 200, the hoop longitudinal beam 310 and the hoop transverse beam 320 to monitor the stress state of each component in real time. At the same time, the present application installs an integrated control center on the ground, which is electrically connected to the stress sensor 500, the pull locking device 360 and the hydraulic jack 330 to transmit the command instructions of the monitoring signals. The stress sensor 500 on the pull screw 340 transmits the monitored real-time stress data to the integrated control center. After receiving the stress data, the integrated control center compares it with the preset safety threshold through the set algorithm to accurately control the pulling force of the pull screw 340. The present application remotely controls the work of the hydraulic jack 330 through the integrated control center. When the formwork assembly 200 is removed, the integrated control center first controls the pull locking device 360 to rotate in the opposite direction to completely release the force of the pull screw 340 and release the active constraint on the formwork assembly 200. Then the integrated control center sends a start command to the hydraulic jack 330. The hydraulic jack 330 fixed on the hoop transverse beam 320 starts according to the preset program. The piston rod of the hydraulic jack 330 extends to push the hoop longitudinal beam 310 matched therewith to translate outward. Under the clamping action of the buckle 230, the longitudinal beam 310 drives the longitudinal formwork 210 connected therewith to translate outward synchronously, thereby completing the removal of the longitudinal formwork 210. Similarly, under the pushing of the hydraulic jack 330 fixed on the hoop longitudinal beam 310, the corresponding transverse formwork 220 is driven to translate outward by the translation of the hoop transverse beam 320, thereby completing the removal of the transverse formwork 220. During the whole removal process, the display screen of the integrated control center can display the moving speed and position of the formwork in real time, so as to facilitate the real-time monitoring of the operator. The present application can dynamically monitor and accurately control the stress state of the formwork assembly 200 through the integrated control center to carry out intelligent formwork removal operation. Compared with the traditional manual formwork removal method, the present application can improve the efficiency of formwork removal operation by more than 90%, effectively avoid the hard collision between the formwork assembly 200 and the poured concrete surface, reduce the damage of the formwork, thereby significantly improve the service life of the formwork assembly 200, and ensure the construction safety.

[0026] When the integrated control center controls the operation of the pull-tightening device 360, the pull-tightening device 360 can lock the hoop longitudinal beam 310 and the hoop transverse beam 320 in the hoop assembly 300 after the template assembly 200 is installed. The pull-tightening device 360 is in an automatic locking state in a daily working state, at which time the hydraulic system in the pull-tightening device 360 is not started, and there is no need to continuously provide hydraulic power. The pull-tightening device 360 only maintains the pulling force of the pull screw 340 through the self-locking characteristics of the mechanical structure, thereby ensuring the stability of the structure while saving energy. When the stress data monitored by the stress sensor 500 exceeds the set upper threshold, the integrated control center issues a pressure reduction instruction to the corresponding pull-tightening device 360. At this time, the hydraulic system of the pull-tightening device 360 is started, the mechanical locking assembly is unlocked through the hydraulic unloading mechanism, the pulling force of the pull screw 340 is slowly reduced, and the hydraulic system of the pull-tightening device 360 stops working immediately after the stress data returns to the safe interval. The pull-tightening device 360 is relocked to maintain the current pulling force state. When the stress data monitored by the stress sensor 500 is lower than the set lower threshold, the integrated control center issues a pressure compensation instruction to the pull-tightening device 360. The hydraulic system of the pull-tightening device 360 is started, the screw is slightly tensioned through the hydraulic drive assembly, the pulling force is compensated to the preset range, and then the hydraulic system is closed. The pull-tightening device 360 again enters the automatic locking pressure-free working state. Through the design of the pull-tightening device 360, the working time of the hydraulic system of the pull-tightening device 360 is maximized, the energy consumption and equipment loss are reduced, and the structural safety and reliability and economy of the entire hoop assembly 300 can be significantly improved.

[0027] When the square pier formwork construction device disclosed in the present application is used to construct the square pier 100 of the bridge, the following steps are performed: Step one, according to the assembly drawing, splice the various parts of the formwork assembly and disassembly platform 420, bolt the main beam and the secondary beam of the main frame of the formwork assembly and disassembly platform 420 to ensure firm connection, then connect and fix the panel layer of the formwork assembly and disassembly platform 420 with the main and secondary beams, and finally install the sliding groove 440 on the formwork assembly and disassembly platform 420. After assembly is completed, use hoisting machinery equipment to hoist the formwork assembly and disassembly platform 420 as a whole to the square pier 100.

[0028] Step two, mark the installation position of the support truss column 430 at the corresponding positions of the four corners of the formwork assembly and disassembly platform 420; use hoisting machinery equipment to hoist the support truss column 430, accurately hoist it to the mark position of the four corners of the formwork assembly and disassembly platform 420, and fasten the support truss column 430 and the formwork assembly and disassembly platform 420 by bolts, and sequentially complete the installation of the four support truss columns 430; According to the steps of assembling the template device platform 420, the operation platform 410 is assembled, and after the assembly is completed, the operation platform 410 is lifted to the top of the support truss column 430 using the hoisting equipment, and the frame of the operation platform 410 is connected and fixed with the top of the support truss column 430 to form an integral structure.

[0029] Step three, using hoisting equipment to assemble the template assembly 200 and the hoop assembly 300 on the ground, connecting the template assembly 200 with the hoop longitudinal beam 310 and the hoop transverse beam 320 in the hoop assembly 300 through the buckle 230 fixed on the outer side of the template assembly 200, and ensuring that there is no loosening during the concrete pouring process; after the connection is completed, check the connection of each buckle 230, and tighten the loose buckle 230; The inter-hoop column 350 is arranged between the upper and lower two groups of hoop assemblies 300 and connected into an integral frame by bolts, and after the installation is completed, the stability of the integral frame is checked to ensure that the three-dimensional reinforcing system formed can ensure the overall stiffness of the template assembly 200; Using hoisting equipment to lift the assembled longitudinal template 210 and transverse template 220 to the template assembly and disassembly platform 420, temporarily fixing and installing the tensioning screw 340; the tensioning screw 340 passes through the through hole reserved on the hoop longitudinal beam 310 and the hoop transverse beam 320, and the lengths of the two ends of the tensioning screw 340 exposed should be basically consistent to facilitate subsequent locking operation, then the tensioning locking device 360 is installed, the tensioning locking device 360 is connected with the tensioning screw 340, and the installation direction of the tensioning locking device 360 is paid attention to during the connection process to ensure that it can work normally, and the stress sensor 500 is installed on the longitudinal template 210, the transverse template 220, the hoop longitudinal beam 310, the hoop transverse beam 320 and the tensioning screw 340 to collect real-time stress data and transmit to the integrated control center.

[0030] Step four, after the overall installation of the square pier column template construction device is completed, the layout of the integrated control center and the connection of the intelligent equipment are carried out, the main cabinet of the integrated control center is fixed on the ground by bolt fastening, each stress sensor 500 is connected to the integrated control center through the data acquisition module, and the power cable and the control cable of the tensioning locking device 360 are connected at the same time, an anti-misplug identifier is arranged at each interface to ensure that the corresponding relationship of "sensor-actuator-controller" is correct.

[0031] Step five, test the whole square pier column formwork construction device through the integrated control center, send control instructions to the square pier column formwork construction device through the integrated control center, record the time from the instruction sending to the square pier column formwork construction device starting to act, verify whether it can quickly start action after receiving the control instruction, the response time should meet the design requirements; if there is a problem, analyze the reason and adjust and repair, and retest until the test is qualified.

[0032] Step six, after the whole square pier column formwork construction device is installed and debugged, start the pier column segment formwork construction process; send instructions through the integrated control center to drive the tightening work of the pull-tight device 360 to drive the formwork assembly 200 to accurately close the mold, and monitor the tightness and perpendicularity of the formwork assembly 200 in real time through the built-in sensor, to ensure that there is no leakage, deformation and other problems during the concrete pouring process; then pour the concrete, use the pumping method to continuously inject the concrete meeting the strength grade into the formwork assembly 200, and cooperate with the vibrating equipment to vibrate the concrete to improve its density, and cover and maintain in time after pouring.

[0033] Step seven, ensure that the concrete reaches the demolding strength, and then perform the demolding operation; send instructions through the integrated control center to synchronize the force unloading of the pull-tight device 360, and release the locking of the pull-tight screw rod 340; during the unloading process, the integrated control center monitors the stress of the pull-tight screw rod 340 in real time to ensure uniform unloading and avoid damage to the formwork assembly 200 or equipment due to excessive local stress; Then start the hydraulic jack 330 in the hoop assembly 200 through the integrated control center, and sequentially jack up the hoop longitudinal beam 310 and the hoop transverse beam 320, control the jacking speed and force of the hydraulic jack 330 during jacking, so that the longitudinal formwork 210 and the transverse formwork 220 smoothly translate along the sliding groove 440 on the operation platform 410 and the formwork assembly platform 420, and separate from the concrete surface; stop the work of the hydraulic jack 330 after the formwork assembly 200 completely separates from the concrete.

Claims

1. Square pier column formwork construction device, characterized by: The invention comprises a formwork assembly (200) adapted to a square pier column (100) and composed of a longitudinal formwork (210) and a transverse formwork (220) which are detachably connected; and at least two groups of hoop assemblies (300) which are spaced apart and arranged on the periphery of the formwork assembly (200) along the height direction of the formwork assembly (200). The hoop assembly (300) comprises a hoop longitudinal beam (310), a hoop transverse beam (320), a hydraulic jack (330) and a tension screw (340). Two adjacent groups of hoop assemblies (300) are fixedly connected by a plurality of hoop inter-column columns (350); the two hoop longitudinal beams (310) ) and two hoop beams (320) are detachably connected to the periphery of the template assembly (200) to form a square frame structure, the hoop longitudinal beam (310) is detachably connected to the longitudinal template (210), and the hoop beam (320) is detachably connected to the transverse template (220); a hydraulic jack (330) is driven and connected between the hoop beam (320) and the hoop longitudinal beam (310), and the two hoop longitudinal beams (310) and the two hoop beams (320) are connected by a tension screw (340), and one end of the tension screw (340) is provided with a tension locking device (360).

2. The square pier column formwork construction device according to claim 1, characterized in that: A plurality of buckles (230) are fixedly provided on the outer sides of the longitudinal template (210) and the transverse template (220), and the hoop longitudinal beam (310) and the hoop transverse beam (320) are connected to the template assembly (200) by means of corresponding buckles (230).

3. The square pier column formwork construction device according to claim 1, characterized in that: The transverse template (220) is an integrated template structure, and the longitudinal template (210) is a split template structure composed of a plurality of detachably connected template units; The plurality of template units constituting the longitudinal template (210) and the template units and the transverse template (220) are detachably connected through the cooperation of the bolt holes (240) and the bolts.

4. The square pier column formwork construction device according to claim 1, characterized in that: The output end of the hydraulic jack (330) is fixedly connected to a limiting block (371), and the backs of the hoop longitudinal beam (310) and the hoop cross beam (320) are both provided with limiting grooves (372) extending along their length directions; the limiting blocks (371) connected to the output end of the hydraulic jack (330) are embedded in the corresponding limiting grooves (372) to form a sliding fit.

5. The square pier column formwork construction device according to claim 4, characterized in that: Two hydraulic jacks (330) are respectively provided on each hoop longitudinal beam (310) and each hoop transverse beam (320). The two hydraulic jacks (330) are respectively fixed to the two ends of the corresponding hoop longitudinal beam (310) or hoop transverse beam (320). The output ends of the hydraulic jacks (330) form a sliding fit with the two ends of the adjacent hoop transverse beam (320) or hoop longitudinal beam (310).

6. The square pier column formwork construction device according to claim 1, characterized in that: The invention also includes an operating platform (410) arranged on the top of the template assembly (200) and a template assembly and disassembly platform (420) arranged at the bottom of the template assembly (200), wherein the operating platform (410) and the template assembly and disassembly platform (420) are fixedly connected via a plurality of supporting truss columns (430); a pouring port communicating with the interior of the template assembly (200) is provided on the operating platform (410); and a square hole adapted to fit the square pier (100) is provided on the template assembly and disassembly platform (420), and the template assembly and disassembly platform (420) is fixed to the periphery of the square pier (100).

7. The square pier column formwork construction device according to claim 6, characterized in that: The bottom surface of the operating platform (410) and the top surface of the template assembly and disassembly platform (420) are fixedly provided with a plurality of slide grooves (440), and the slide grooves (440) extend radially outwardly along the template assembly (200); the longitudinal template (210) and the transverse template (220) form a sliding fit with the slide grooves (440) through a plurality of sliders fixed at the top and bottom.

8. The square pier column formwork construction device according to claim 1, characterized in that: It also includes a stress sensor (500) installed on the template assembly (200), the hoop longitudinal beam (310), the hoop cross beam (320), and the tension screw (340); the stress sensor (500), the tension locking device (360), and the hydraulic jack (330) are all electrically connected to an integrated control center set up on the ground.

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